Citazione Stile APA (7a Edizione)

Widdowson, H. G. (1971). Language teaching texts: A manual for teachers. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Widdowson, H. G. Language Teaching Texts: A Manual for Teachers. Oxford: Oxford University Press, 1971.

Citatione MLA (9a ed.)

Widdowson, H. G. Language Teaching Texts: A Manual for Teachers. Oxford University Press, 1971.